﻿/************************************************************************

   Extended Silverlight Toolkit

   Copyright (C) 2010-2012 Xceed Software Inc.

   This program is provided to you under the terms of the Microsoft Public
   License (Ms-PL) as published at http://extendedsilverlight.codeplex.com/license

   Please purchase a commercial version of this toolkit if you are using
   it in a commercial product. The commercial versions support the project,
   and also include more features for each control, priority support,
   source code, updates, removed watermark, and a proprietary license.

   Visit http://xceed.com and follow @datagrid on Twitter.

  **********************************************************************/

using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace Xceed.Silverlight.Data
{
  internal class EstimateItemCount
  {
    internal EstimateItemCount( long value, bool isEstimate, bool basedOnOffset )
      : this( new EstimateInt64( value, isEstimate ), basedOnOffset )
    {
    }

    internal EstimateItemCount(EstimateInt64 value, bool basedOnOffset)
    {
      if( value == null )
        throw new ArgumentNullException( "value" );

      if( !value.IsEstimate && basedOnOffset )
        throw new ArgumentException( "The specified value cannot be a non estimate and based on an offset.", "value" );

      m_value = value;
      m_basedOnOffset = basedOnOffset;
    }

    internal long Value
    {
      get
      {
        return m_value.Value;
      }
    }

    internal bool IsEstimate
    {
      get
      {
        return m_value.IsEstimate;
      }
    }

    internal bool IsBasedOnOffset
    {
      get
      {
        return m_basedOnOffset;
      }
    }

#if DEBUG
    public override string ToString()
    {
      return string.Format( "({0}, basedOnOffset={1}", m_value, m_basedOnOffset );
    }
#endif  //DEBUG

    public override int GetHashCode()
    {
      return m_value.GetHashCode();
    }

    public override bool Equals( object obj )
    {
      if( obj == null )
        return false;

      if( this == obj )
        return true;

      if( !( obj is EstimateItemCount ) )
        return false;

      EstimateItemCount otherCount = (EstimateItemCount)obj;

      return ( otherCount.m_basedOnOffset == this.m_basedOnOffset )
        && object.Equals( otherCount.m_value, this.m_value );
    }

    private EstimateInt64 m_value;
    private bool m_basedOnOffset;
  }
}
